Q. What is the IUPAC name of the alkene with the formula C5H10?
A.
Pentene
B.
Butene
C.
Hexene
D.
Cyclopentene
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Solution
The IUPAC name of the alkene with the formula C5H10 is pentene.
Correct Answer: A — Pentene
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Q. What is the IUPAC name of the carboxylic acid with the formula C3H6O2? (2023)
A.
Propanoic acid
B.
Butanoic acid
C.
Acetic acid
D.
Formic acid
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Solution
The IUPAC name of C3H6O2 is Propanoic acid, which has a three-carbon chain.
Correct Answer: A — Propanoic acid
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Q. What is the IUPAC name of the compound CH2=CH-CH2-CH3?
A.
Butene
B.
Propene
C.
1-Butene
D.
2-Butene
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Solution
The compound CH2=CH-CH2-CH3 is named 1-Butene as the double bond is between the first and second carbon.
Correct Answer: C — 1-Butene
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Q. What is the IUPAC name of the compound CH3-CH2-CH2-CH3?
A.
Butane
B.
Propane
C.
Pentane
D.
Hexane
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Solution
The IUPAC name for CH3-CH2-CH2-CH3 is Butane.
Correct Answer: A — Butane
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Q. What is the IUPAC name of the compound CH3CH2NH2? (2021)
A.
Ethylamine
B.
Dimethylamine
C.
Propylamine
D.
Methylamine
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Solution
The IUPAC name of CH3CH2NH2 is Ethylamine, as it consists of an ethyl group attached to an amine.
Correct Answer: A — Ethylamine
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Q. What is the IUPAC name of the compound CH3COOH? (2020)
A.
Methanoic acid
B.
Ethanoic acid
C.
Propanoic acid
D.
Butanoic acid
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Solution
The IUPAC name of CH3COOH is Ethanoic acid, which is commonly known as acetic acid.
Correct Answer: B — Ethanoic acid
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Q. What is the IUPAC name of the compound CH≡C-CH2-CH3?
A.
1-butyne
B.
2-butyne
C.
1-pentyne
D.
3-pentyne
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Solution
The IUPAC name of CH≡C-CH2-CH3 is 1-butyne.
Correct Answer: A — 1-butyne
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Q. What is the IUPAC name of the compound with the formula C2H5-CO-CH3?
A.
Butan-2-one
B.
Propan-2-one
C.
Butan-1-one
D.
Propan-1-one
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Solution
The compound is a ketone with four carbons, and the carbonyl group is on the second carbon, thus it is Butan-2-one.
Correct Answer: A — Butan-2-one
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Q. What is the IUPAC name of the compound with the formula C4H6?
A.
1-butyne
B.
2-butyne
C.
Cyclobutene
D.
Butadiene
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Solution
The compound C4H6 is named 2-butyne according to IUPAC nomenclature.
Correct Answer: B — 2-butyne
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Q. What is the IUPAC name of the compound with the formula C6H5-CH2-CHO?
A.
Benzaldehyde
B.
Benzylaldehyde
C.
Phenylacetaldehyde
D.
Phenylaldehyde
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Solution
The compound has a benzyl group and an aldehyde functional group, making the correct name Benzylaldehyde.
Correct Answer: B — Benzylaldehyde
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Q. What is the IUPAC name of the compound with the formula C6H5CH3?
A.
Toluene
B.
Benzaldehyde
C.
Phenol
D.
Aniline
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Solution
The compound C6H5CH3 is known as toluene, which is a methyl-substituted derivative of benzene.
Correct Answer: A — Toluene
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Q. What is the IUPAC name of the compound with the structure CH3-CH(CH3)-C(CH3)2-CH2-CH3?
A.
2,3-Dimethylpentane
B.
3,3-Dimethylpentane
C.
2,2-Dimethylpentane
D.
3-Methylpentane
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Solution
The longest chain has 5 carbons, and there are two methyl groups on the third carbon, so the name is 3,3-Dimethylpentane.
Correct Answer: B — 3,3-Dimethylpentane
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Q. What is the jelly-like substance inside the cell called? (2018)
A.
Nucleoplasm
B.
Cytoplasm
C.
Protoplasm
D.
Chloroplast
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Solution
Cytoplasm is the jelly-like substance that fills the cell and contains organelles.
Correct Answer: B — Cytoplasm
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Q. What is the Kb of ammonia (NH3) if the pKa of its conjugate acid (NH4+) is 9.25?
A.
1.8 x 10^-5
B.
5.6 x 10^-10
C.
1.0 x 10^-14
D.
3.2 x 10^-5
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Solution
Kb = Kw / Ka = 1.0 x 10^-14 / 5.6 x 10^-10 = 1.8 x 10^-5
Correct Answer: A — 1.8 x 10^-5
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Q. What is the key takeaway from the article on sustainable agriculture? (2020)
A.
Sustainable agriculture is not feasible.
B.
Sustainable agriculture can help combat food insecurity.
C.
Sustainable agriculture is only beneficial for large farms.
D.
Sustainable agriculture has no impact on the environment.
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Solution
The article emphasizes that sustainable agriculture practices can play a significant role in addressing food insecurity while also protecting the environment.
Correct Answer: B — Sustainable agriculture can help combat food insecurity.
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Q. What is the key takeaway from the discussion on renewable energy sources?
A.
Renewable energy is not a viable alternative to fossil fuels.
B.
The transition to renewable energy is essential for environmental sustainability.
C.
Renewable energy sources are too expensive to implement.
D.
Fossil fuels will remain the primary energy source for the foreseeable future.
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Solution
The discussion emphasizes the necessity of transitioning to renewable energy for a sustainable future.
Correct Answer: B — The transition to renewable energy is essential for environmental sustainability.
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Q. What is the key takeaway from the passage about dietary habits? (2021)
A.
All dietary habits are equally beneficial.
B.
Dietary habits have a significant impact on health.
C.
Dietary habits are solely a matter of personal choice.
D.
Dietary habits do not affect mental health.
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Solution
The passage emphasizes the significant impact of dietary habits on overall health, indicating their importance.
Correct Answer: B — Dietary habits have a significant impact on health.
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Q. What is the key takeaway from the passage about the effects of urbanization? (2020)
A.
Urbanization leads to improved living conditions for all.
B.
Urbanization has no impact on rural areas.
C.
Urbanization can cause environmental and social challenges.
D.
Urbanization is a trend that will reverse soon.
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Solution
The passage highlights that while urbanization can bring economic opportunities, it also poses significant environmental and social challenges that need to be addressed.
Correct Answer: C — Urbanization can cause environmental and social challenges.
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Q. What is the key takeaway from the passage about the role of art in society?
A.
Art is a luxury that society can do without.
B.
Art plays a vital role in reflecting and shaping societal values.
C.
Art is only important for the wealthy.
D.
Art has no impact on social change.
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Solution
The passage emphasizes that art is essential for reflecting societal values and can inspire social change.
Correct Answer: B — Art plays a vital role in reflecting and shaping societal values.
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Q. What is the kinetic energy of a 3 kg object moving at a speed of 4 m/s? (2022)
A.
24 J
B.
12 J
C.
6 J
D.
48 J
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Solution
Kinetic Energy (KE) = 0.5 × m × v² = 0.5 × 3 kg × (4 m/s)² = 24 J.
Correct Answer: B — 12 J
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Q. What is the kinetic energy of a 4 kg object moving at a speed of 3 m/s? (2015)
A.
18 J
B.
12 J
C.
24 J
D.
36 J
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Solution
Kinetic Energy (KE) = 0.5 × mass × velocity² = 0.5 × 4 kg × (3 m/s)² = 18 J.
Correct Answer: B — 12 J
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Q. What is the Ksp expression for the salt Ag2SO4?
A.
Ksp = [Ag+]^2[SO4^2-]
B.
Ksp = [Ag2+]^2[SO4^2-]
C.
Ksp = [Ag+]^2[SO4^2-]^2
D.
Ksp = [Ag+]^2[SO4^2-]^3
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Solution
The solubility product constant (Ksp) for Ag2SO4 is given by Ksp = [Ag+]^2[SO4^2-] because the dissociation is Ag2SO4 ⇌ 2Ag+ + SO4^2-.
Correct Answer: A — Ksp = [Ag+]^2[SO4^2-]
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Q. What is the Ksp expression for the salt AgCl? (2023)
A.
[Ag+][Cl-]
B.
[AgCl]
C.
[Ag+][Cl-]^2
D.
[AgCl]^2
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Solution
The solubility product constant (Ksp) for AgCl is expressed as Ksp = [Ag+][Cl-], where [Ag+] and [Cl-] are the molar concentrations of the ions in a saturated solution.
Correct Answer: A — [Ag+][Cl-]
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Q. What is the Ksp of AgCl if the solubility of AgCl in water is 1.0 x 10^-5 M?
A.
1.0 x 10^-10
B.
1.0 x 10^-5
C.
1.0 x 10^-15
D.
1.0 x 10^-20
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Solution
Ksp = [Ag+][Cl-] = (1.0 x 10^-5)(1.0 x 10^-5) = 1.0 x 10^-10.
Correct Answer: A — 1.0 x 10^-10
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Q. What is the Ksp of AgCl if the solubility of AgCl in water is 1.33 x 10^-5 M? (2023)
A.
1.78 x 10^-10
B.
1.33 x 10^-5
C.
1.33 x 10^-10
D.
1.78 x 10^-5
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Solution
Ksp = [Ag+][Cl-] = (1.33 x 10^-5)(1.33 x 10^-5) = 1.78 x 10^-10.
Correct Answer: A — 1.78 x 10^-10
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Q. What is the largest desert in the world? (2022)
A.
Sahara
B.
Arabian
C.
Gobi
D.
Antarctic
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Solution
The largest desert in the world is the Antarctic Desert.
Correct Answer: D — Antarctic
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Q. What is the largest organ in the human body? (2020)
A.
Heart
B.
Liver
C.
Skin
D.
Lungs
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Solution
The largest organ in the human body is the skin.
Correct Answer: C — Skin
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Q. What is the largest planet in our solar system? (2023)
A.
Earth
B.
Mars
C.
Jupiter
D.
Saturn
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Solution
Jupiter is the largest planet in our solar system.
Correct Answer: C — Jupiter
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Q. What is the latent heat of fusion for ice?
A.
334 J/g
B.
2260 J/g
C.
4190 J/g
D.
1000 J/g
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Solution
The latent heat of fusion for ice is approximately 334 J/g.
Correct Answer: A — 334 J/g
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Q. What is the latent heat of fusion if 2000 J of energy is required to melt 0.5 kg of ice? (2021)
A.
2000 J/kg
B.
4000 J/kg
C.
1000 J/kg
D.
500 J/kg
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Solution
Latent heat of fusion (L) = Q / m = 2000 J / 0.5 kg = 4000 J/kg.
Correct Answer: A — 2000 J/kg
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